Review of the bee genus Pseudoanthidium Friese, 1898 (Hymenoptera: Apoidea Megachilidae: Anthidiini) of China with descriptions of three new species Author Niu, Ze-Qing 0000-0002-0964-0317 Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, 1 Beichen West Road, Chaoyang District, Beijing, 100101, P. R. China. & niuzq @ ioz. ac. cn; https: // orcid. org / 0000 - 0002 - 0964 - 0317 niuzq@ioz.ac.cn Author Luo, A-Rong 0000-0001-9652-5896 Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, 1 Beichen West Road, Chaoyang District, Beijing, 100101, P. R. China. & luoar @ ioz. ac. cn; https: // orcid. org / 0000 - 0001 - 9652 - 5896 luoar@ioz.ac.cn Author Griswold, Terry USDA-ARS Pollinating Insects Research Unit, Utah State University, Logan, Utah 84322 - 5310, USA. Author Zhu, Chao-Dong Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, 1 Beichen West Road, Chaoyang District, Beijing, 100101, P. R. China. & State Key Laboratory of Integrated Pest Management, Institute of Zoology, Chinese Academy of Sciences, 1 Beichen West Road, Chaoyang District, Beijing, 100101, P. R. China. & College of Life Sciences, University of Chinese Academy of Sciences, No. 19 (A) Yuquan Road, Shijingshan District, Beijing, P. R. China 100049 text Zootaxa 2021 2021-07-02 4996 1 133 152 journal article 10.11646/zootaxa.4996.1.5 1175-5326 5069569 843F2FBA-4A9B-4D31-B6F0-FFDEFD310370 Pseudoanthidium ( Pseudoanthidium ) chenggongense Niu & Zhu , sp. nov. ( Figs 11a–f ) Diagnosis : The new species is only known in the female, it is very similar to P . ( P .) yanruae Niu & Zhu , sp. nov. , but its frons has an oval yellow spot, paraocular area maculated only up to the level of antennal sockets, mandible with five teeth. FIGURE 11. Pseudoanthidium ( Pseudoanthidium ) chenggongense Niu & Zhu , sp. nov. , female, holotype. a: Body in lateral view; b: Head in frontal view; c: Head in lateral view; d: Mandible in lateral view; e: Mesosoma in dorsal view; f: Metasoma in dorsal view. Scale bar: a, b, c, e, f, 1 mm; d, 0.5 mm. Description : Female, BL=7.0 mm ( Fig. 11a ); head broader than long, HW: HL=60: 48 ( Fig. 11b ); gena nearly as broad as eye, GW: EW=16: 15 ( Fig. 11c ); width of metasoma narrower than the width between the tegulae, MtW: MsW=64: 58. Clypeus broader than long, with shallower and denser rounded punctures ( Fig. 11b ); vertex, frons and gena with deeper and denser rounded punctures ( Fig. 11c ); scutum and scutellum with rounded, dense punctures, size of punctures as same as that on vertex ( Fig. 11e ); disc of T1–T5 with smaller and denser rounded punctures, punctures on T1–T2 distinct and larger then that on T3–T5 ( Fig. 11f ); mandible not widened apically, with 5 teeth ( Fig. 11d ); subantennal suture directed toward outer margin of antennal socket, distinctly arcuate outward ( Fig. 11b ); fore wing with the same structural features as that of P. yanruae ; pronotal lobe lamellate; omaulus rounded; axilla rounded lateroposteriorly ( Fig. 11e ); scutellum posterior margin rounded ( Fig. 11e ); propodeum without basal series of pits and without fovea behind spiracle; basal margin of T1 with carina; pygidial plate absent; tarsal claw with inner median tooth, arolium absent. Clypeus yellow, with two black longitudinal belt-shaped markings, but the markings not distinct ( Fig. 11b ); paraocular area maculated only up to the level of antennal sockets ( Fig. 11b ); basal 3/4 part of mandible brown ( Fig. 11d ); vertex black, with one yellow narrow belt-shaped marking, the marking not interrupted medially, and extended downward to the top of gena ( Figs. 10a, 10c, 10e ); frons black, with one rounded yellow spot ( Fig. 11b ); supraclypeal area black ( Fig. 11b ); pronotal lobe black, except yellow apicolaterally ( Fig. 11e ); scutum black, apical margin with two yellow rectangle-shaped markings, and the markings not bent backward to tegulae ( Fig. 11e ), tegula yellowish brown ( Fig. 11e ); axilla yellow ( Fig. 11e ); scutellum black, with two long sub-triangle-shaped markings apicolaterally ( Fig. 11e ); metasomal tergum black, T1–T5 with two yellow bands respectively, and the bands on T1–T3 obviously narrower than others, the bands on T4–T5 sub- rectangle-shaped ( Fig. 11f ); except fore femur, middle femur and hind femur brown apically, fore tibia, middle tibia and out surface of hind tibia brown, all tarsi brown, other parts of all legs black ( Figs. 11a, 11b, 11c ). Pubescence sparse; apical margin of clypeus, periphery of antennal socket covered paler yellowish-white hairs ( Fig. 11b ); vertex, scutum and scutellum covered with sparse yellowish-brown hairs ( Figs. 11a, 11c ); episternum covered sparse paler white hairs ( Fig. 11c ); coxa, trochanter, femur, out surface of middle basitarsus and hind basitarsus covered yellowish-white hairs, inner surfaces of middle basitarsus and inner surface of hind basitarsus covered golden hairs; S2–S5 with denser, longer yellowish-white hairs forming scopa. Male, unknown. Type material : Holotype : ♀ , China , Yunnan , Chenggong Xian ( 24º54′N , 102º48′E ), 19.VII.1941 , leg. no in- formation on label. Distribution : China ( Yunnan ). Etymology : Named after the type locality, Chenggong ( China , Yunnan ).